[libxml2]Add libxml2 library

libxml2/test/URI/file.uri

@@ -0,0 +1 @@
+file:///foo.txt

libxml2/test/URI/port.uri

@@ -0,0 +1,2 @@
+nbd://:10888
+https://example.com:12345/

libxml2/test/URI/smith.uri

@@ -0,0 +1,15 @@
+/foo/../bar
+foo/../bar
+./foo/../bar
+foo/./../bar
+foo/bar/.././../baz
+foo/..
+foo/bar/..
+./foo
+././foo
+.././foo./
+.././foo/.
+/foo
+../foo
+../../foo
+../../../foo

libxml2/test/URI/uri.data

@@ -0,0 +1,21 @@
+
+.
+bar
+bar#baz
+bar?baz
+bar?baz#baz2
+#baz
+?baz
+?baz#baz2
+../up.a.notch.html#wow
+../up.a.notch.html?wow
+../up.a.notch.html?wow#wow2
+/root.cgi#OK
+/root.cgi?OK
+/root.cgi?OK#OK2
+http://elsewhere.com/#deep
+http://elsewhere.com/?deep
+http://elsewhere.com/?deep#deep2
+//elsewhere.com/bar
+//elsewhere.com:8080/bar
+//:8080